[SunkenCiv]

Thanks fieldmarshaldj.

• Grand Canyon much older than previously thought [2008]
• Grand Canyon Gorge Is 9 Times Older Than Thought [2008]
• Lava Left It's Mark On Grand Canyon [2008]
• How Old is the Grand Canyon? Park Service Won't Say [2006]
• Noah Claim Annoys Scientists [2004] (Thanks Fred Nerks)

  If the Grand Canyon is, say, forty million years old and Ice Ages occur, say, every forty thousand years, then the Grand Canyon must have been covered with ice over a thousand times in its history. Odd that the Colorado River can leave its mark, but being covered by an ice pack a mile thick a thousand times -- for centuries at a time -- does not. [JoeSchem]

[colorado tanker]

Not eating the crust makes pizza a low carb meal.

Well, that's what I tell myself.

[gleeaikin]

When was this guy Joe Schem writing? I thought the Ice Ages were around 100k apart not 40k, and only for about the last million years. The article said this covering by ice was half a billion years ago. I doubt Grand Canyon was covered by ice in these past million years.